op 	 {
  name: "RiscBitcast"
  input_arg {
    name: "x"
    type_attr: "SrcT"
  }
  output_arg {
    name: "y"
    type_attr: "DstT"
  }
  attr {
    name: "SrcT"
    type: "type"
  }
  attr {
    name: "DstT"
    type: "type"
  }
}
